WO2022269987A1

WO2022269987A1 - Driving device

Info

Publication number: WO2022269987A1
Application number: PCT/JP2022/005202
Authority: WO
Inventors: 喜一郎澤田; 洋人中村; 宏一郎渡辺; 宏治木本; 順久山田; 真倫一方井; 英人吉嶺; 健藤崎; 親芳目黒
Original assignee: オリンパス株式会社
Priority date: 2021-06-23
Filing date: 2022-02-09
Publication date: 2022-12-29
Also published as: JPWO2022269971A1; WO2022270011A1; JPWO2022270011A1; WO2022269971A1

Abstract

When a case forming the exterior of this driving device is divided into two regions, that is, a first region Ar1 and a second region Ar2, the first region Ar1 has disposed therein: a treatment tool connector which is electrically connected to an energy treatment tool; a driving circuit 15 which drives the energy treatment tool; a cooling unit which cools one or more elements constituting the driving circuit 15; and a power supply terminal. The second region Ar2 has disposed therein: an operation input part which receives a user operation; a control circuit 73 which controls the action of the driving circuit 15; and a communication connector for performing communication with an external device.

Description

drive

The present invention relates to a driving device.

Conventionally, an ultrasonic treatment instrument for incising and cutting living tissue using ultrasonic vibrations generated by an ultrasonic transducer, and driving power for generating the ultrasonic vibrations for the ultrasonic treatment instrument is known (see, for example, Patent Document 1).

JP-A-9-135843

By the way, in order to cut a hard portion such as a bone by using an ultrasonic treatment device, a high-output driving power is supplied to the ultrasonic treatment device compared to the case of treating a soft portion such as a blood vessel. There is a need to.
However, in the driving device, when supplying driving power with a higher output than when treating a soft part such as a blood vessel, the temperature of the elements provided inside the driving device tends to be higher than the rated temperature. .
Therefore, there is a demand for a technology capable of reducing the temperature rise of the driving device.

The present invention has been made in view of the above, and an object of the present invention is to provide a driving device capable of reducing the temperature rise of the driving device.

In order to solve the above-described problems and achieve the object, the drive device according to the present invention includes a housing forming an exterior, an input/output section provided exposed to the outside of the housing, and an external energy source. A drive circuit for driving the treatment instrument, a cooling unit for cooling at least one of elements constituting the drive circuit, a control circuit for controlling the operation of the drive circuit, and a control circuit exposed to the outside of the housing. and an external connection section, wherein the input/output section includes a treatment instrument connector electrically connected to the energy treatment instrument, and an operation input section for receiving a user operation, and the cooling unit generates an airflow. and a heat sink that receives heat from at least one of the elements and has a ventilation passage serving as a flow path for an airflow generated by the cooling fan, wherein the external connection portion is connected to an external device. A communication connector for performing communication and a power terminal for inputting electric power supplied from the outside are provided. The treatment instrument connector, the drive circuit, the cooling unit, and the power supply terminal are provided in region 1, and the operation input section, the control circuit, and the communication connector are provided in the second region. are arranged.

According to the drive device of the present invention, it is possible to reduce the temperature rise of the drive device.

FIG. 1 is a diagram showing a schematic configuration of a treatment system according to an embodiment. FIG. 2 is a diagram showing an ultrasonic treatment instrument. FIG. 3 is a diagram for explaining the configuration of the driving device. FIG. 4 is a diagram illustrating the configuration of the driving device. FIG. 5 is a diagram for explaining the configuration of the driving device. FIG. 6 is a diagram for explaining the cooling structure of the driving device. FIG. 7 is a diagram for explaining the cooling structure of the driving device.

A mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described below with reference to the drawings. It should be noted that the present invention is not limited by the embodiments described below. Furthermore, in the description of the drawings, the same parts are given the same reference numerals.

[Schematic configuration of treatment system]
FIG. 1 is a diagram showing a schematic configuration of a treatment system 1 according to an embodiment.
The treatment system 1 treats a living tissue such as a bone by applying ultrasonic vibrations to the living tissue. Here, the treatment means, for example, removal or cutting of living tissue such as bone. Note that FIG. 1 illustrates a treatment system for performing anterior cruciate ligament reconstruction as the treatment system 1 .
This treatment system 1 includes an endoscope device 2, a treatment device 3, a guiding device 4, and a perfusion device 5, as shown in FIG.

The endoscope device 2 includes an endoscope 21 and a control device 22, as shown in FIG.
As shown in FIG. 1, the endoscope 21 passes through a first portal P1 that communicates between the inside of the joint cavity C1 of the knee joint J1 and the outside of the skin, and the distal end portion of the insertion portion 211 is inserted into the joint cavity C1. is inserted. Then, the endoscope 21 irradiates the inside of the joint cavity C1, captures the illumination light (subject image) reflected inside the joint cavity C1, and captures the subject image.
The control device 22 performs various types of image processing on the captured image captured by the endoscope 21, and displays the captured image after the image processing on a display device (not shown).

The treatment device 3 includes an ultrasonic treatment device 31, a driving device 6, and a foot switch 32, as shown in FIG.
FIG. 2 is a diagram showing the ultrasonic treatment device 31. As shown in FIG.
The ultrasonic treatment tool 31 corresponds to the energy treatment tool according to the present invention. As shown in FIGS. 1 and 2, the ultrasonic treatment instrument 31 includes a treatment instrument body 311, a blade 312 (FIG. 2), a sheath 313, a cable 314, and a connector 315 (FIG. 1).
The treatment instrument main body 311 is formed in a substantially cylindrical shape as a whole. Inside the treatment instrument main body 311, an ultrasonic transducer 3111 (Fig. 5) and a drive energy input section 3112 (see FIG. 5) for driving the ultrasonic transducer 3111 are accommodated.

Here, the driving device 6 supplies the driving power to the ultrasonic transducer 3111 according to the operation of the foot switch 32 by the operator. The supply of the driving power is not limited to the operation of the foot switch 32, and may be performed according to the operation of an operation unit (not shown) provided in the ultrasonic treatment instrument 31, for example.
A detailed configuration of the driving device 6 will be described later in "Configuration of the driving device".

The blade 312 is made of, for example, a titanium alloy and has a substantially cylindrical shape. The proximal end of this blade 312 is connected to an ultrasonic transducer 3111 inside the treatment instrument main body 311 . The blade 312 transmits ultrasonic vibrations generated by the ultrasonic transducer 3111 from the proximal end to the distal end. In the present embodiment, the ultrasonic vibration is longitudinal vibration along the longitudinal direction of blade 312 . In addition, as shown in FIG. 2, a distal treatment section 3121 is provided at the distal end of the blade 312 .

The sheath 313 is formed in a cylindrical shape that is longer and narrower than the treatment instrument main body 311 and covers part of the outer circumference of the blade 312 from the treatment instrument main body 311 to an arbitrary length.
A proximal end portion of the cable 314 is electrically connected to the driving energy input portion 3112 inside the treatment instrument main body 311 . A connector 315 is connected to the tip of the cable 314 .

The distal end portion of the ultrasonic treatment instrument 31 described above is guided by the guiding device 4 inserted into the joint cavity C1 through the second portal P2 communicating between the inside of the joint cavity C1 and the outside of the skin. It is inserted inside the joint cavity C1. Then, when ultrasonic vibrations are generated in a state in which the distal end treatment section 3121, which is the distal end portion of the ultrasonic treatment instrument 31, is in contact with the treatment target site of the bone, the distal end treatment section 3121 and the mechanical vibration are generated by the hammering action. The portion of the bone that hits the target is pulverized into fine granules. Further, when the operator pushes the distal treatment section 3121 into the treatment target site, the distal treatment section 3121 advances into the treatment target site while crushing the bone. As a result, a bone hole having a cross-sectional shape corresponding to the cross-sectional shape of the distal treatment portion 3121 is formed in the treatment target site.

The guiding device 4 is inserted through the second portal P2 into the joint cavity C1, and guides the insertion of the distal end portion of the ultrasonic treatment instrument 31 into the joint cavity C1.

Here, the interior of the joint cavity C1 is filled with a perfusate such as physiological saline. The perfusate is then delivered into the joint cavity C1 by the perfusion device 5 and discharged to the outside of the joint cavity C1. The perfusion apparatus 5 includes a liquid source 51, a liquid feed tube 52, a liquid feed pump 53, a drain bottle 54, a drain tube 55, and a drain pump 56, as shown in FIG.
Liquid source 51 contains the perfusate.
The liquid supply tube 52 has one end connected to the liquid source 51 and the other end connected to the endoscope 21 .
The liquid-sending pump 53 sends the perfusate from the liquid source 51 toward the endoscope 21 through the liquid-sending tube 52 . The perfusate delivered to the endoscope 21 is then delivered into the joint cavity C1 from a liquid delivery hole (not shown) formed in the distal end portion of the insertion section 211 .

The drainage bottle 54 contains the perfusate discharged to the outside of the joint cavity C1.
The drainage tube 55 has one end connected to the guiding device 4 and the other end connected to the drainage bottle 54 .
The drainage pump 56 follows a flow path from the guiding device 4 inserted inside the joint cavity C1 to the drainage tube 55 to discharge the perfusate inside the joint cavity C1 to the drainage bottle 54 .

[Configuration of drive device]
Next, the configuration of the driving device 6 will be described.
3 to 5 are diagrams for explaining the configuration of the driving device 6. FIG. Specifically, FIG. 3 is a perspective view of the driving device 6 viewed from the front side. FIG. 4 is a perspective view of the driving device 6 as seen from the rear side. FIG. 5 is a block diagram showing the circuit configuration of the driving device 6. As shown in FIG.
The driving device 6 has a rectangular parallelepiped housing 60, as shown in FIGS. Inside the housing 60, a plurality of electronic components and the like that constitute an electronic circuit and the like are accommodated.
As shown in FIG. 3, a front surface portion 61 constituting the front surface of the housing 60 includes a treatment instrument connector 61A, a power switch 61B, a plurality of (two in this embodiment) operation switches 61C, and a touch panel 61D. are provided in a state of being exposed to the outside.

A connector 315 of the ultrasonic treatment tool 31 is detachably connected to the treatment tool connector 61A. When the connector 315 and the treatment instrument connector 61A are connected between the ultrasonic treatment instrument 31 and the driving device 6, drive power is supplied and control signal communication is performed via the cable 314. .
The power switch 61B is a switch for turning on the power of the driving device 6 .
The two operation switches 61C are switches for receiving various operations by a user such as an operator.
The touch panel 61D is a panel in which a display panel (not shown) that displays various images and a position input device (not shown) such as a touch pad that is provided on the surface of the display panel and receives user operations are combined. .
The treatment instrument connector 61A, power switch 61B, two operation switches 61C, and touch panel 61D described above correspond to the input/output unit 61F (FIG. 3) according to the present invention. Also, the two operation switches 61C and the touch panel 61D correspond to the operation input section 61G (FIG. 3) according to the invention.

Here, the housing 60 is divided into two areas, a first area Ar1 (FIG. 3) located on the left side when viewed from the front part 61 side, and a second area Ar2 (FIG. 3) located on the right side. . Note that the left-right direction of the housing 60 viewed from the front portion 61 side corresponds to the first direction D1 (FIG. 3) according to the present invention. Further, the front-rear direction perpendicular to the first direction D1 and extending from the front surface portion 61 to the rear surface portion 62 of the housing 60 corresponds to the second direction D2 (FIG. 3) according to the present invention.
In this case, the treatment instrument connector 61A and the power switch 61B are arranged in a portion of the front surface portion 61 located in the first area Ar1, as shown in FIG. On the other hand, the operation input portion 61G is arranged in a portion of the front portion 61 located in the second area Ar2.

In addition, as shown in FIG. 4, a rear surface portion 62 constituting the rear surface of the housing 60 has an exhaust hole 62A, a power terminal 62B, and a plurality of (two in this embodiment) communication connectors 62C. is provided in an exposed state.
The exhaust hole 62A is a hole for discharging the air inside the housing 60 to the outside. The cooling structure of the driving device 6 will be described later in "Cooling structure of the driving device".
The power terminal 62B is an inlet that is connected to a commercial power source (not shown) and receives input power from the commercial power source.
A plurality of communication connectors 62C are connectors that are respectively connected to external devices in order to communicate with the external devices.
The power terminal 62B and the plurality of communication connectors 62C described above correspond to the external connection portion 62D (FIG. 3) according to the present invention.

The exhaust holes 62A and the power terminals 62B described above are arranged in a portion of the rear surface portion 62 located in the first region Ar1, as shown in FIG. On the other hand, the plurality of communication connectors 62C are arranged in a portion of the rear surface portion 62 located in the second area Ar2.

Next, the circuit configuration of the driving device 6 will be described.
As shown in FIG. 5, the driving device 6 includes a first circuit 7, a second circuit 8,

third circuits

9A and 9B, an operation control section 10, optical switches 11A and 11B, and a memory 12. and a communication unit 13 .
The configuration of the driving device 6 will be described below together with the description of the operation of the driving device 6 .

The first circuit 7 includes, as shown in FIG. and a primary winding 77 forming one side of the output transformer 14 .

When the operator operates the foot switch 32 , a signal is input from the operation control section 10 to the drive control section 72 . In response to the input of the signal, the drive control unit 72 controls the operation of the relay circuit 84 (FIG. 2) constituting the second circuit 8 via the optical switch 11A to turn on the relay circuit 84. state. In response to the input of the signal, the drive control unit 72 drives the ultrasonic treatment device 31 based on power from the power supply unit 71, which is a primary circuit electrically connected to the power supply terminal 62B. Generates a drive signal for Then, the drive control unit 72 outputs the drive signals to the

switching circuits

74A and 74B after passing through the

buffer circuits

73A and 73B. Here, the

buffer circuits

73A and 73B are provided to reduce the load on the drive control section 72 and to increase the efficiency of switching in the

switching circuits

74A and 74B.

The switching circuit 74A is provided with a high-side switching element 741HA and a low-side switching element 741LA. Similarly, the switching circuit 74B is provided with a high-side switching element 741HB and a low-side switching element 741LB. As the switching element 741, for example, a field effect transistor (FET) or the like can be used.

The switching

circuits

74A and 74B switch the high-side switching elements 741HA and 741HB and the low-side switching elements 741LA and 741LB to the driving frequency of the ultrasonic transducer 3111 based on the driving signals output from the

buffer circuits

73A and 73B. It is turned on and off alternately at the above frequencies.
Outputs from the switching

circuits

74A and 74B are input to the primary winding 77 after passing through the low-pass filters 75A and 75B and the common mode coil 76, respectively. At this time, outputs from the switching

circuits

74A and 74B are converted into sinusoidal drive signals (hereinafter referred to as ultrasonic drive signals) through low-pass filters 75A and 75B. Here, the common mode coil 76 functions as a noise filter and reduces noise contained in the ultrasonic drive signal.

The second circuit 8 is a so-called patient circuit, which is insulated from the first circuit 7 by the output transformer 14 and also insulated from the ground. As shown in FIG. 5, the second circuit 8 includes a secondary winding 81 forming the other side of the output transformer 14, a pair of

electrodes

82A and 82B forming a treatment instrument connector 61A, and a pair of output lines 83A. , 83B, a relay circuit 84, a matching coil 85, and a noise countermeasure component 86.

When a sinusoidal ultrasonic drive signal is input to the primary winding 77 , the secondary winding 81 outputs an ultrasonic drive signal having a higher voltage than the primary winding 77 . The ultrasonic drive signal is AC power generated inside the second circuit 8 and output to the ultrasonic treatment device 31 .
The pair of

electrodes

82A and 82B constitutes the treatment instrument connector 61A, and is electrically connected to the driving energy input section 3112 via the cable 314 when the treatment instrument connector 61A and the connector 315 are connected. It is an electrode that
A pair of

output lines

83A and 83B are signal lines that connect the secondary winding 81 and a pair of

electrodes

82A and 82B.

The relay circuit 84 is provided on the output line 83A. Under the control of the drive control unit 72, the relay circuit 84 is in an ON state in which the secondary winding 81 and the pair of

electrodes

82A and 82B are electrically connected, or in which the secondary winding 81 and the pair of

electrodes

82A and 82B are electrically connected. is switched to an off state in which the That is, when the relay circuit 84 is in the ON state, the ultrasonic driving signal output to the secondary winding 81 is transmitted through the pair of

output lines

83A and 83B to the pair of electrodes 82A. , 82B. On the other hand, when the relay circuit 84 is in the OFF state, the ultrasonic drive signal output to the secondary winding 81 is transmitted through the pair of

output lines

83A and 83B to the pair of electrodes 82A. , 82B.

The matching coil 85 is provided so as to connect the pair of

output lines

83A and 83B, and is used to drive the ultrasonic transducer 3111 efficiently. In this embodiment, the matching coil 85 is provided closer to the secondary winding 81 than the relay circuit 84, but the position is not limited to this, and may be provided at another position.
The noise countermeasure component 86 is composed of, for example, a ferrite core or the like, and is provided closer to the pair of

electrodes

82A and 82B than the relay circuit 84 and matching coil 85 are. The noise countermeasure component 86 prevents unnecessary noise from being output from the pair of

electrodes

82A and 82B and affecting external equipment arranged close to the treatment system 1 .

The ultrasonic drive signal output to the secondary winding 81 is output to the drive energy input section 3112 via the second circuit 8, the connector 315, and the cable 314. Then, the driving energy input section 3112 ultrasonically vibrates the ultrasonic transducer 3111 according to the input of the ultrasonic driving signal.

Further, the drive control unit 72 is connected to the memory 3113 of the ultrasonic treatment tool 31 via the optical switch 11B, and reads the ID information of the ultrasonic treatment tool 31 stored in the memory 3113. Thus, the type of the ultrasonic treatment tool 31 is discriminated. Further, the drive control unit 72 sets drive parameters (fundamental frequency, current value, maximum continuous output time, etc.) according to the type of the ultrasonic treatment instrument 31 identified, based on the information stored in the memory 12 . Then, the drive control section 72 generates a drive signal based on the feedback result of the voltage and current of the ultrasonic drive signal.

Further, the drive control unit 72 causes the touch panel 61D to display the magnitude of the ultrasonic drive signal output from the drive device 6 to the ultrasonic treatment instrument 31. The magnitude of the ultrasonic driving signal output from the driving device 6 to the ultrasonic treatment instrument 31 can be adjusted by operating the foot switch 32, the operation switch 61C, and the like.

The third circuit 9A has one end electrically connected to the output line 83A and the other end electrically connected to the ground GND. In this embodiment, one end of the third circuit 9A is connected to the secondary winding 81 side of the matching coil 85 in the output line 83A. The third circuit 9A has a configuration in which

capacitors

91A and 92A, which are passive elements, and an inductor 93A, which is a passive element, are connected in series. 91A, 92A and inductor 93A are arranged in this order.

The third circuit 9B has one end electrically connected to the output line 83B and the other end electrically connected to the ground GND. In this embodiment, one end of the third circuit 9B is connected to the secondary winding 81 side of the matching coil 85 in the output line 83B. The third circuit 9B has a structure in which

capacitors

91B and 92B, which are passive elements, and an inductor 93B, which is a passive element, are connected in series. 91B, 92B and inductor 93B are arranged in this order.

By the way, the current leaking from the second circuit 8 (hereinafter referred to as patient leakage current) depends on the stray capacitance of components such as the output transformer 14 used for insulation of the second circuit 8 and the stray capacitance of the circuit pattern. . That is, the patient leakage current increases as the stray capacitance increases. Further, the patient leakage current increases as the value of the ultrasonic drive signal (AC power) output to the ultrasonic treatment tool 31 increases.

The

inductors

93A and 93B forming the

third circuits

9A and 9B have the function of reducing the patient leakage current by apparently reducing the floating capacitance described above. Note that the

capacitors

91A, 91B, 92A, and 92B forming the

third circuits

9A and 9B are used to insulate the second circuit 8 from the ground GND.

The communication unit 13 is electrically connected to the communication connector 62C and communicates with external devices.

The drive control section 72 described above corresponds to the control circuit according to the present invention. Also, the communication unit 13 corresponds to a communication circuit according to the present invention. Furthermore, switching

circuits

74A and 74B, low-pass filters 75A and 75B, common mode coil 76, primary winding 77, second circuit 8, and

third circuits

9A and 9B are connected to drive circuit 15 (Fig. 5).

[Cooling structure of driving device]
Next, the cooling structure of the driving device 6 will be described.
6 and 7 are diagrams for explaining the cooling structure of the driving device 6. FIG. Specifically, FIG. 6 is a view of the inside of the housing 60 viewed from above. FIG. 7 is a side view of the positional relationship between the cooling unit 16 and the upper surface portion 63 forming the upper surface of the housing 60. As shown in FIG.
As shown in FIGS. 6 and 7 , inside the housing 60 , a cooling unit 16 and an exhaust fan 17 are used as a cooling structure for the driving device 6 .

The cooling unit 16 cools some of the elements that make up the drive circuit 15 . In this embodiment, the cooling unit 16 cools the switching

circuits

74A, 74B. The cooling unit 16 includes first and

second cooling fans

161 and 162 and a heat sink 163, as shown in FIGS.
The first and

second cooling fans

161 and 162 correspond to cooling fans according to the present invention that respectively generate airflows. In this embodiment, the first and

second cooling fans

161 and 162 are configured by axial fans of the same size. The first and

second cooling fans

161 and 162 are arranged facing each other along the second direction D2, and as shown by arrows in FIG. Air currents are respectively generated from the front surface portion 61 to the rear surface portion 62 along the direction D2 of 2. As shown in FIG.

As shown in FIGS. 6 and 7, the heat sink 163 has a rectangular cylindrical shape with a ventilation path 1631 therein serving as a flow path for airflow generated by the first and

second cooling fans

161 and 162 . In addition, a plurality of fins may be provided inside the square cylindrical shape of the heat sink 163 in order to increase the surface area of the heat sink 163 . Then, the heat sink 163 is arranged so that the central axis Ax0 of the rectangular tube shape is parallel to the second direction D2 and is coaxial with the rotational axes of the first and

second cooling fans

161 and 162. It is arranged between the first and

second cooling fans

161 and 162 . The heat sink 163 is integrated with the first and

second cooling fans

161 and 162 by fixing members such as screws. Also, the cross-sectional area of the heat sink 163 perpendicular to the central axis Ax0 is smaller than the cross-sectional area of the first and

second cooling fans

161 and 162 perpendicular to the central axis Ax0. Therefore, the airflows generated by the first and

second cooling fans

161 and 162 flow not only along the ventilation path 1631 but also along the outer peripheral surface of the heat sink 163 as indicated by arrows in FIG.
The heat sink 163 described above is made of, for example, aluminum, an aluminum alloy, copper, a copper alloy, or the like.

Here, switching

circuits

74A and 74B are thermally connected to the outer peripheral surface of the heat sink 163, as shown in FIGS. For example, the switching

circuits

74A and 74B are thermally connected to the outer peripheral surface of the heat sink 163 by fixing members such as screws.
Specifically, the switching elements 741HA and 741HB are thermally connected to the outer peripheral surface of the heat sink 163 while facing each other in the first direction D1. The switching elements 741LA and 741LB are located closer to the rear surface portion 62 than the switching elements 741HA and 741HB, and are thermally connected to the outer peripheral surface of the heat sink 163 while facing each other in the first direction D1. ing.
The heat generated in the

switching circuits

74A and 74B is received by the heat sink 163, and the switching

circuits

74A and 74B are cooled by the air currents generated by the first and

second cooling fans

161 and 162, respectively.

The distance DA (FIG. 7) between the cooling unit 16 and the upper surface portion 63 of the housing 60 is set to 10 mm or more.

The exhaust fan 17 exhausts the air inside the housing 60 to the outside through the exhaust hole 62A. In this embodiment, the exhaust fan 17 is an axial fan that is larger in size than the first and

second cooling fans

161 and 162 . Further, the exhaust fan 17 is positioned on the rear surface portion 62 side with respect to the cooling unit 16, and is disposed in such a posture that the rotation axis of the exhaust fan 17 is coaxial with the central axis Ax0.

The drive circuit 15, the power supply section 71, the cooling unit 16, and the exhaust fan 17 are arranged in the first area Ar1, as shown in FIG. For convenience of explanation, FIG. 6 omits the illustration of the members disposed in the first region Ar1 except for the switching

circuits

74A and 74B, the output transformer 14, and the matching coil 85 of the drive circuit 15. there is
Specifically, when the housing 60 is viewed from above, the cooling unit 16 is arranged along a central axis Ax1 (FIG. 6) extending in the second direction D2 through the central position of the first region Ar1 in the first direction D1. On the other hand, the central axis Ax0 is arranged in a state of being positioned away from the second region Ar2.

Here, the first area Ar1 is a first front side area Ar11 positioned on the front part 61 side, a first rear side area Ar13 positioned on the rear part 62 side, and a first rear side area Ar13 positioned between the areas Ar11 and Ar13. It is partitioned into three regions, one middle region Ar12 (FIG. 6).
In this case, some of the elements constituting the drive circuit 15 are arranged in the first front side area Ar11. In the present embodiment, an output transformer 14 and a matching coil 85 are arranged in the first front side area Ar11, as shown in FIG. More specifically, the output transformer 14 is arranged on the side of the central axis Ax0 that is further away from the second region Ar2. Also, the matching coil 85 is arranged closer to the second region Ar2 than the central axis Ax0.
Although not shown in FIG. 6, a treatment instrument connector 61A and a power switch 61B are arranged in the first front area Ar11.

Switching circuits

74A and 74B and a cooling unit 16 are arranged in the first intermediate area Ar12, as shown in FIG.
Further, a power supply unit 71 and an exhaust fan 17 are arranged in the first back area Ar13. Although not shown in FIG. 6, an exhaust hole 62A and a power terminal 62B are provided in the first rear area Ar13.

On the other hand, in the second area Ar2, elements other than the power supply unit 71, the switching

circuits

74A and 74B, the low-pass filters 75A and 75B, the common mode coil 76 and the primary winding 77 in the first circuit 7, and the operation control A section 10, optical switches 11A and 11B, a memory 12, and a communication section 13 are provided. For convenience of explanation, FIG. 6 shows only the drive control unit 72 and the communication unit 13 as members arranged in the second area Ar2.

Here, the second region Ar2 is a second front side region Ar21 located on the front portion 61 side, a second back side region Ar23 located on the back portion 62 side, and a second region Ar21 located between the regions Ar21 and Ar23. 2 and an intermediate region Ar22 (FIG. 6).
In this case, although not shown in FIG. 6, an operation input section 61G is arranged in the second front side area Ar21.
In addition, as shown in FIG. 6, the communication section 13 and the drive control section 72 are arranged in the second rear area Ar23. Although not shown in FIG. 6, a communication connector 62C is also arranged in the second back area Ar23.

According to this embodiment described above, the following effects are obtained.
In the driving device 6 according to the present embodiment, the treatment instrument connector 61A, the driving circuit 15, the cooling unit 16, and the power terminal 62B are arranged in the first area Ar1. On the other hand, an operation input section 61G, a drive control section 72, and a communication connector 62C are arranged in the second area Ar2. That is, the elements that easily generate heat can be collectively arranged in the first region Ar1, and the elements that easily generate heat can be collectively cooled by the cooling unit 16 and the exhaust fan 17. FIG.
Therefore, according to the driving device 6 of the present embodiment, the temperature rise of the driving device 6 can be efficiently reduced. Moreover, since the temperature rise of the drive device 6 can be efficiently reduced, the size of the drive device 6 can be reduced.

Further, in the drive device 6 according to the present embodiment, the cooling unit 16 extends in the second direction D2 through the center position in the first direction D1 in the first region Ar1 when the housing 60 is viewed from above. The central axis Ax0 is disposed on the side away from the second region Ar2 with respect to the extending central axis Ax1 (FIG. 6).
Therefore, the layout makes it difficult for heat to reach the second region Ar2 side where the drive control unit 72 and the like are arranged, and even if the drive device 6 is downsized, the temperature of the drive device 6 does not rise. can be efficiently reduced.

Further, in the driving device 6 according to the present embodiment, the distance DA (FIG. 7) between the cooling unit 16 and the upper surface portion 63 of the housing 60 is set to 10 mm or more.
Therefore, the temperature rise of the upper surface portion 63 of the housing 60 can be avoided.

Further, in the driving device 6 according to the present embodiment, the input/output portion 61F is arranged on the front portion 61 . Also, the external connection portion 62</b>D is arranged on the back portion 62 .
Therefore, it is possible to configure the driving device 6 which is easy to use.

Further, in the driving device 6 according to the present embodiment, a treatment instrument connector 61A and a power switch 61B are arranged in a portion of the front surface portion 61 located in the first region Ar1. In addition, an exhaust hole 62A and a power terminal 62B are provided in a portion of the back surface portion 62 located in the first region Ar1.
Therefore, the heat inside the housing 60 can be efficiently discharged to the outside.

In the driving device 6 according to the present embodiment, some elements constituting the driving circuit 15 are arranged in the first front side area Ar11. A cooling unit 16 and switching

circuits

74A and 74B, which are elements cooled by the cooling unit 16, are arranged in the first intermediate area Ar12. Further, a power supply unit 71 and an exhaust fan 17 are arranged in the first back area Ar13.
Therefore, the elements arranged inside the housing 60 can be efficiently cooled.

In the driving device 6 according to the present embodiment, an operation input section 61G is provided in a portion of the front surface section 61 located in the second area Ar2. Further, a communication connector 62C is arranged in a portion of the back surface portion 62 located in the second area Ar2.
Therefore, it is possible to realize a configuration in which the operation input section 61G can be easily operated without the ultrasonic treatment instrument 31 connected to the driving device 6 becoming an obstacle.

In the driving device 6 according to the present embodiment, an operation input section 61G is arranged in the second front side area Ar21. Further, the communication section 13 and the drive control section 72 are arranged in the second back side area Ar23.
Therefore, the layout makes it difficult for heat to reach the side of the second rear side area Ar23 where the communication unit 13 and the drive control unit 72 are arranged. 6 temperature rise can be effectively reduced.

(Other embodiments)
Although the embodiments for carrying out the present invention have been described so far, the present invention should not be limited only to the above-described embodiments.
In the embodiment described above, the ultrasonic treatment device 31 for removing or cutting a living tissue such as a bone was exemplified as an energy treatment device according to the present invention, but the present invention is not limited to this. The energy treatment device according to the present invention includes an ultrasonic treatment device for sealing or incising a living tissue such as a blood vessel, an energy treatment device for treating a living tissue by applying high-frequency energy to the living tissue, and Alternatively, an energy treatment instrument that treats a living tissue by applying thermal energy to the living tissue may be employed. Here, "applying high-frequency energy to a living tissue" means applying a high-frequency current to the living tissue. Further, "applying thermal energy to a living tissue" means transferring heat generated by a heater or the like to the living tissue.

Reference Signs List 1 treatment system 2 endoscope device 3 treatment device 4 guiding device 5 perfusion device 6 drive device 7 first circuit 8 second circuit 9A, 9B third circuit 10 operation control unit 11A, 11B optical switch 12 memory 13 Communication unit 14 Output transformer 15 Drive circuit 16 Cooling unit 17 Exhaust fan 21 Endoscope 22 Control device 31 Ultrasonic treatment instrument 32 Foot switch 51 Liquid source 52 Liquid feed tube 53 Liquid feed pump 54 Drain bottle 55 Drain tube 56 Drain Fluid pump 60 housing 61 front part 61A treatment instrument connector 61B power switch 61C operation switch 61D touch panel 61F input/output part 61G operation input part 62 rear part 62A exhaust hole 62B power supply terminal 62C communication connector 62D external connection part 63 top part 71 power supply part 72 drive control unit 73A, 73B buffer circuit 74A, 74B switching circuit 75A, 75B low-pass filter 76 common mode coil 77 primary winding 81 secondary winding 82A, 82B electrode 83A, 83B output line 84 relay circuit 85 matching coil 86 noise Countermeasure parts 91A, 91B, 92A, 92B Capacitors 93A, 93B Inductor 161 First cooling fan 162 Second cooling fan 163 Heat sink 211 Insertion section 311 Treatment instrument body 312 Blade 313 Sheath 314 Cable 315 Connector 741, 741HA, 741HB, 741LA , 741LB switching element 1631 ventilation path 3111 ultrasonic transducer 3112 drive energy input section 3113 memory 3121 distal treatment section Ar1 first region Ar11 first front side region Ar12 first intermediate region Ar13 first back side region Ar2 second area Ar21 Second front area Ar22 Second intermediate area Ar23 Second back area Ax0, Ax1 Center axis C1 Joint cavity D1 First direction D2 Second direction DA Distance GND Ground J1 Knee joint P1 Second 1st portal P2 2nd portal

Claims

a housing forming an exterior;
an input/output unit exposed to the outside of the housing;
a drive circuit for driving an external energy treatment device;
a cooling unit that cools at least one element that constitutes the drive circuit;
a control circuit for controlling the operation of the drive circuit;
and an external connection part exposed to the outside of the housing,
The input/output unit
a treatment instrument connector electrically connected to the energy treatment instrument;
and an operation input unit that accepts user operations,
The cooling unit is
a cooling fan for generating an airflow;
a heat sink that receives heat from at least one of the elements and has a ventilation passage serving as a flow path for the airflow generated by the cooling fan;
The external connection part is
a communication connector for communicating with an external device;
and a power supply terminal for inputting power supplied from the outside,
When the housing is divided into two regions, a first region and a second region,
In the first region,
The treatment instrument connector, the drive circuit, the cooling unit, and the power terminal are arranged,
In the second area,
A driving device in which the operation input unit, the control circuit, and the communication connector are arranged.
When the housing is viewed from above, the direction in which the first region and the second region are aligned is defined as a first direction, and the direction orthogonal to the first direction is defined as a second direction. ,
The cooling unit is
A central axis extending in the second direction passing through the center position in the first direction in the cooling unit is aligned with a central axis extending in the second direction passing through the center position in the first direction in the first region. 2. The driving device according to claim 1, wherein the driving device is arranged in a state of being positioned away from the second region.
Between the upper surface of the housing and the cooling unit,
2. The driving device according to claim 1, wherein a gap of 10 mm or more is provided.
The input/output unit
further comprising a power switch for turning on the power of the drive device, and disposed on the front portion constituting the front surface of the housing,
The external connection part is
2. The driving device according to claim 1, which is arranged on a rear portion forming a rear surface of the housing.
In the portion located in the first region in the front portion,
The treatment instrument connector and the power switch are arranged,
In the portion located in the first region in the back portion,
5. The driving device according to claim 4, wherein an exhaust hole for discharging air inside said housing to the outside and said power supply terminal are provided.
The first region is composed of a first front side region located on the front side, a first back side region located on the back side, and the first front side region and the first back side region. When partitioned into three regions with the first intermediate region located in between,
In the first front side region,
Some elements constituting the drive circuit are arranged,
In the first intermediate region,
The at least one element and the cooling unit are arranged,
In the first back side region,
6. The driving device according to claim 5, further comprising: a power supply unit connected to the power supply terminal; and an exhaust fan for exhausting the air inside the housing from the exhaust hole to the outside.
In the portion located in the second region in the front portion constituting the front surface of the housing,
The operation input unit is arranged,
In the portion located in the second region in the back portion constituting the back surface of the housing,
2. The driving device according to claim 1, wherein said communication connector is arranged.
The second area includes a second front side area positioned on the front side forming the front side of the housing, a second rear side area positioned on the rear side forming the rear side of the housing, and the second When partitioned into three regions, 2 front side regions and a second intermediate region located between the second back side region,
In the second front side region,
The operation input unit is arranged,
In the second back side region,
2. The driving device according to claim 1, further comprising a communication circuit connected to said communication connector and said control circuit.